Product from organic derivatives of cellulose



Patented A r. 8, 1930.

UNITED STATES PATENT OFFICE CAMILLE DREYFUS, OF NEW YORK, N. Y.

PRODUCT FROlYII ORGANIC DERIVATIVES OF CELLULOSE No Drawing.

The moire effects obtained by the aboveprocesses on such materials, however, have the drawback that they are not permanent. On continued Wear or upon washing, laundering etc., the moire effect gradually lessens and finally disappears completely. The applicant has now discovered that permanent effects are obtained when certain materials are treated by known processes. He has found that if fabrics or textile materials made wholly or largely from organic derivatives of cellulose are subjected to any of the known processes for obtaining moire effects, beautiful and permanent effects can be obtained on these fabrics. Fabrics made from cellulose acetate, cellulose propionate, or ethyl cellulose etc., give excellent results.

Moire Franeaise and moire Renaissance are obtainable on cellulose acetate fabrics, the markings being very pronounced and beautiful. Fine moire effects were also obtained on such fabrics by embossing appropriate designs thereon under heat and pressure by means of engraved rollers. Fabrics M5 marked by either of the above methods were washed, laundered, etc., with no visible effect on the moire, differing very strikingly from silk or other fabrics in this respect.

true in spite of the fact that such fabrics need 0 not be subjected to as high a heat when. imparting themoire efli'ects thereto as is necessary to impart moire effects to silk or similar fabrics. Very pleasing results are obtained by producm moire effects on ribbed fabrics containing t 0 organic derivatives of cellulose such as cellulose acetate.

Excellent results have been obtained with cellulose acetate fabrics but the invention is r not to be considered as limited to such fabrics. It includes within its scopeany fabrics made This is Application filed November 4, 1926. Serial No. 146,287.

wholly or partially from organic derivatives of celluose having permanent moire efiects and the invention istobe construed as limited only by the scope of the appended claims.

Having described my invention, what I claim and desire to secure by Letters Patent 1s:

1. A textile material comprising individual filaments of organic derivatives of cellulose, at least some of which filaments are permanently deformed and present a moire design which is permanent.

2. A textile material comprising individual 7 filaments of organic esters of cellulose, at least some of which filaments are permanently deformed and present a moire design which is permanent.

3. A textile material comprising individual filaments of cellulose acetate, at least some of which filaments are permanently deformed and present a moire design which is perma nent. u

l. A fabric comprising individual filaments of organic derivatives of cellulose, at least some of which filaments are permanently deformed and present a moire design which is permanent.

5. A ribbed fabric comprising individual filaments of organic derivatives of cellulose, at least some of which filaments are permanently deformed and present a moire design which is permanent.

6. A ribbed fabric comprising individual filaments of organic esters of cellulose, at least some of which filaments are permanently deformed and present a moire design which is permanent.

7. A ribbed fabric comprising individual filaments of cellulose acetate, at least some of which filaments are permanently deformed and present a moire design which is permanent.

In testimony whereof, he has hereunto subscribed his name.

' CAMILLE DREYFUS. 

